E7 NITROGEN CONCENTRATION (Q2) NH4-N [mg l-1] Winam Gulf, September 1985 Depth [m] Station 6 Station 31 Station 32 Station 103 0 0.2 0.35 0.7 0.35 0.5 - - - 0.15 1 - 0.4 - 0.15 2 - - - 3 - N.D. - 4 - - - 10 - - 15 0.35 0.4 20 0.3 - 25 - - 30 - 0.35 NO3-N [mg l-1] Winam Gulf, September 1985 Depth [m] Station 6 Station 31 Station 32 Station 103 0 0.1* 0.1* 0.1* 0.1* 0.5 - - - 0.1* 1 - 0.1* - 0.1 2 - - - 3 - 0.1* - 4 - - - 10 - - 15 0.1 0.1* 20 0.1 - 25 - - 30 0.2 * Less than given figure.